Steel logging-truck.



T. E. KILBY.

STEEL LOGGING TRUCK.

APPLICATION FILED mus 19. 1916.

Patented Sept. 12, 1916.

3 SHEETS-SHEET 1.

' 3 wwuttoi witness,

abbovmmj T. E. KlLBY.

STEEL LOGGING TRUCK.

APPLICATION FILED JUNE 19. 19:6.

1 1 98,237, Patented Spt. 12, 1916.

3 SHEETS-SHEET 2.

T. E. KlLBY.

STEEL LOGGING-TRUCK.

APPLICATION FILED JUNE 19. 1916.

1,198,237, v PatentedSept. 12,1916.

3 SHEETS-SHEET a.

I /5 Q O THOMAS E. KILBY, OF ANNISTON, ALABAMA.

STEEL LOGGING-TRUCK.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed June 19, 1916. Serial No. 104,516.

To all whom it may concern:

Be it known that I, THOMAS E. KILBY, a citizen of the United States of America, residing at Anniston, in the county of Calhoun and State of Alabama, have invented certain new and useful Improvements in Steel Logging-Trucks, of which the following is a specification.

This invention relates to logging trucks and more particularly to what are termed all steel trucks which are adapted to be connected in pairs to form a logging car, each truck carrying one bunk and a complete draft rigging.

In my arrangement a steel draft Slll 1s provided which is built of steel plates and channels, or other suitable steel shapes, and is placed across the truck between the bunk and bolster, being securely riveted and braced to the bolster and yet left free at its ends to have the requisite amount of vertical play to take care of the compression of the truck springs and of the ordinary inequalities to be encountered on the logging trucks. The ends of the draft sill are received between vertical guides which prevent lateral motion but allow the prescribed vertical motion.

The steel bunk is formed of an H-beam placed with the web in a horizontal position so as to provide a top channel to receive the stake chains or rods which extend across the bunk and are made fast at their ends in brackets mounted in the H-beam channel near the ends of the bunk preferably under the A-shaped stakes on the bunk. By this arrangement I avoid the disadvantages of external fastenings for the stake chains and dispose the latter where they are convenient of access and yet fully protected from liability to injury. The top edge of the vertical flanges of the H-beam should be planed to a sharp edge to prevent the load from slipping and'dropping down between the trucks.

My invention comprises other novel features of construction and arrangements of parts, which in their preferred embodiment onl are hereinafter more particularly described and illustrated, but it is understood that the same may be varied within the scope of my invention.

Referring to the drawings: Figure 1 shows the logging truck partly in elevation and artly in vertical section taken along the line ww of Fig. 2. ,Fig. 2 is a plan view of half of the truck showing the bunk broken away on one side to illustrate the arrangement of the draft gear therefor. Fig. 3 is an end view of the truck showing the draft gear partly broken away. Fig. i is an enlarged vertical section on the ine 3 1 of Fig. 3. Fi 5 is a detail view of the stake chain fastening bracket.

Similar reference numerals refer to simi lar parts throughout the drawings.

Only one truck is shown but it will be understood that the car consists of two trucks which are connected by any suitable reach or center sill (not shown). Each truck has at its sides top arch bars 1 and tie bars 2 extending at each end past the flange of the wheels 3, and two steel angle bars 4, one at each end, are placed across the truck from the arch bars on one side to the arch bars on the other side and fastened to the same so asto present a horizontal top flange and form a cross supporting member at each end of the truck.

A steel draft sill is built up of steel top and bottom plates 5 and 6 connected to outturned channel bars 7. The steel shapes forming the draft sill are riveted or bolted together and are placed across the truck bolster 8 which is constructed in any well known manner and mounted on sprlngs 9 supported on the bottom arch bars 2 in \the manner well understood in the art. The draft sill extends to the outer edge of the cross angle bars 4 and is securely riveted to the truck bolster at its center and additionally braced thereto by four diagonal braces 10 riveted to the draft sill and to the truck bolster. The outer ends of the steel draft sill work between vertical guides 11 riveted or bolted at their lower ends to the cross angles 4 and riveted or bolted at their upper ends to steel channels 12, one of which passes over the draft sill at each end and is bolted or riveted at its ends to the angles 4. This channel 12 is bent up in the form of an arch, as will be seen more clearly in Fig. 3. At each end of the draft sill I attach a buffer plate 13 which extends sufficiently below the draft sill and is made wide enough to engage and bear against the draft sill channels 7 and top plate 5. The draft sill also carries at each end a complete draft rigging, 15 having its cheek plates 16 riveted to the side channels of the draft sill. On each connecting head 15 of the draft riggings I provide an integral buffer shoulder 17 which stands high enough and side bearings 20 riveted thereto, the

center plate, as shown in Fig. 4, passing into the draft sill and engaging the center plate 21 that is riveted to the truck bolster and which extends upward into the draft sill, thus allowing the bunk to be turned over the draft sill and bolster. A center pin 22 serves to pivotally connect the bunk and bolster, being passed through the center plate 19, the middle web of the H-beam, the center plate 21 and the top and bottom members of the bolster, and serving to tie all together. The top center plate is free to turn between the side channels 7 of the draft sill. The side bearings on the bunk overlie side bearings 23 which are riveted to the truck bolster and serve to limit the vertical movement of the bunk ends.

The bunk is supported in vertical posi tion by guides 24 riveted to the draft sill on each side of the bunk and made to slope away from the bunk in vertical planes on each side of the center line of the draft sill so as to allow the predetermined horizontal swinging movements of the bunk which are also limited by check chains 25 fastened to the sides of the truck and connected on each side to an end of the bunk.

The bunk is equipped at each end with stakes 26 which are pivotally connected to the bunk and which are preferably A-shaped metal frames that straddle the bunk ends to which they are pivoted. To the cross member 27 of each stake I make fast a shackle 28 to which is attached a short stake chain 29, which in turn is connected to a rod 30 that extends across the bunk and at its free end is connected to a series of chain links 31 which come opposite the end of the bunk from that on which the stake it controls is mounted. Eachstake has its stake chain 29, rod 30 and chain links 31 extending entirely across the bunk and lying inthe top channel of the H-beam 18. At each end of the bunk in this top channel and in position under the stake, when raised to its operating position, I provide a bracket 32 formed by an angled steel or malleable iron casting riveted to the cross web and to the vertical flange of the H-beam 18' and provided with a central vertical web 33 disposed crosswise of the bunk and reinforced at each side by lateral horizontal webs 34- and provided below said webs with a notch 35 opening toward the center line of the bunk and made just Wide the Web 33 and a latch pin 36 has its upper end passed through a hole 37 in the outer web 34 and its lower dropped into a socket in the base of the casting. A'chain 38 serves to loosely attach the pin to the bunk and when in position the in serves to hold the stake chain 31 secure y in osition. These end chains 31, when the sta es are thus fastened in raised position, will project slightly beyond the ends of the bunk so as to be in convenient position to be grasped or engagied by a tool in order to disconnect the sta e chains from the brackets 32 after the removal of the pins 36. The top edges of the vertical flanges on the H-beam 18 are made sharp to bite into the logs and hold them against slipping off the bunk. These edges are formed by reversely sloping faces 39.

In operation, the logs are supported on the bunks which are left free to swing horizontally on their center pins 22 and to move vertically with the truck bolster and also to rock in a vertical plane on the truck bolster, the ends of the draft sill being guided in their vertical play by the vertical channels 11 and limited in such pla by the channel 12 and the cross angle 4. he truck is free to swing independently of the bunk to the limits permitted by the chains 25 and the guide plates 24, and the whole truck structure is very strongly organized, rugged and durable. In order to make suitable provision for the attachment of the toggle chain to the bunk, I provide rings 40 made fast to the ends of the bunk by U-bolts 41, by which latter bolts if desired, the fastening chains 38 for the latch pins 36 may be connected to the bunk. I

I claim as m invention 1. The combination with' a truck frame comprising wheels, a bolster and spring supports for the latter, of a draft sill mounted on and vertically movable with the bolster, transverse members at each end of the track over which the ends of the'draft sill project and above which the sill is normally substantially spaced, vertically elongated guides on said cross members to receive and prising a center draft rigging mounted on each end of the draft sill, a vertically elongated buffer plate riveted to each end of the draft sill, and a vertically elongated buffer shoulder on the outer end of each draft rigging adapted to co-aet with the adjacent buffer plate through the different vertical adjustments on the draft sill.

3. In a. logging truck, a truck frame combolster, wheels and transmembers beyond the wheels, arched channel plates connected to the end cross members, vertical guides connected to the arches and end members, a draft sill extending from, end to end of the truck and built up of steel shapes adapted to fit snugly between said vertical guides with clearance between the ends of the sill and the arches above and end members of the truck frame below to provide for vertical adjustments of the draft sill, and a bunk pivotally mounted on the draft sill above the bolster, substantially as described.

4:. In a logging truck, a structural steel bunk having a top channel, logging stakes pivoted to the ends of the bunk and having cross connections in the channel and extending from. end to end of the bunk, said connections comprising chain links at their free ends and a slotted bracket disposed in the channel of the bunk and riveted to the bunk adjacent to each end thereof, the slot in said bracket being adapted to receive and interlock with chain links 'at the end of said cross connections, substantially as described.

5. In a logging truck, a structural steel bunk having a top channel, A-shaped logverse end ging stakes pivoted to the ends of the bunk and having fastenings lying in the channel and extending from end to end of the bunk, said fastenings each comprising chain links at their free ends and a slotted bracket disposed in the top channel of the bunk and riveted to the bunk adjacent to each end thereof, the slot in said bracket being adapted to receive and interlock with chain links at the end of said fastenings, said brackets being disposed under and guarded by said stakes when the latter are in operating position, substantially as described.

6. A logging truck having a structural steel bunk with a top channel, an angled bracket attached at each end of the bunk and having a vertical web extending transversely of the bunk, there being a slot in each web to receive a chain link and fasten a stake chain, end stakes, and stake chain-fastenings passingwrosswise of the bunk and lying in said channel.

7. A logging truck having a structural stell bunk with a top channel, anangled bracket attached at each end of the bunk and having a vertical web extending transversely of the bunk, there being a slot in each Web to receive a chain link and fasten a stake chain, end stakes, stake chain fastenings passing crosswise of the bunk and lying in said channel, and a latch mounted in each bracket and adapted to hold the stake chain fast in engagement therewith.

In testimony whereof I afiix my signature.

THOMAS E. KILBY.

Witness:

H. L. Caren. 

